The fso command saves the current item and overwrites the item when a duplicate item-ID already exists on file. This form is used when specifying an item-ID other than the one originally requested.
fso{(file.reference}{item-ID}
| item-ID | Name of the item saved. |
| file.reference | Name of the file to write to. |
This does not mean that the command was invalid. Rather, it means that the item, main.program.original, was already on file.
ed bp main.program top .fs main.program.original cmnd?
It can be overwritten as:
.fso main.program.original
ex command, fd command, fi command, fs command, Editor overview